PART REFERENCE SHEET

PRO 1 LS1 SMALL-BLOCK CNC CYLINDER HEADS
Port
Cham.
Int/Exh
Spring Dia.
Part #
Matl.
Vol.
Vol.
Plug
Valves
B=Beehive
Notes
D=Double
11071040
Alum 250 68 AP 2.08/1.60 VJ   Bare Casting
11071142
Alum 250 68 AP 2.08/1.60 1.290B  
11071143
Alum 250 68 AP 2.08/1.60 1.295D